Improvement in signal-lanterns



2Sheets--Shet2 B. SYKES. Signal-Lanterns.

ST. CLARK Si* W.

Patented June?, 1873.

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SAMUEL W. OLARKAND WILLIAM It.

PATENT SYKES, OF LONDON, ENGLAND; SAID SYKES ASSIGNOR TO SAID CLARK.

IMPROVEMENT IN SIGNAL-LANTERNS.

Specificationformingpart of Letters Patent No. 140,015, dated June 17,1873; application iled f February 19, 1873.

`which the colored shades or glasses are so held or hung that they fallof their own weight when they are released from the mechanism by whichthey are held up; and our invention consists of improved mechanism forraising,

retaining, and releasing them.

1n carrying our invention into effect the colored shades (say,red andgreen,) ct a1 are held in frames b b, each of which has a slotted lug orprojection, c, by which theshade is hung from a horizontal bar, d elf,in the lamp. The `two shades are so disposed that when they are bothraised they overlap each other. To the lamp we connect a rod or wire, c,the upper part of which is bent over the top of the lamp so as to bewithin reach of the fingers of the hand which holds the lamp by the ordinary top handle f. The middle portion of this rod is vertical, and isfree to turn on its axis-within a sleeve or tube, h, on the lampcasingor on the lamp-handle, while the lower end of the rod is bent into ahook like form, c, so as to pass under and hold up the two coloredshades, c al. When both colored shades are thus held up the lamp gives awhite light, but by turning the rod by means of the nger portion to oneside or the other one or the other of the colored shades is freed, andfalls of its own weight between the light and the bulls-eye m, so as togive a colored signal. On returning the rod to its normal or centralposition, it lifts the colored shade.

By our arrangement it is impossible for both the colored shades to be inaction at once, and as no springs are employed there is little liabilityof any derangement. l

Figures 1 and 2 are vertical sections, taken at right angles to eachother, of a hand-signal lamp, constructed as hereinbefore described.

a all are the two colored shades held in frames or rings b b. Each frameb has a lug or projection, c, by which it is hung or attached to ahorizontal bar, d, carried across the lamp. In the gures the shade a isshown as up, and the shade al as down 5 when they are both up theyoverlap each other, and the lamp then shows a clear or white light. ceis a rod or wire, the upper part of which is bent over the top of thelamp so as to be withinreach of the fingers of the hand which holds thelamp by the handlef; this upper end of the rod c is tted withalinger-piece, g. The middle portion of the rod is vertical, and is freeto turn on its axis within a sleeve, h, while the lower end of the rodis bent into a hooklike form, so as to pass under the shade-frames b b.These frames are shown as slotted to receive the end of the rod, theobject of the slots being to prevent a too sudden fall of the shades. Onmoving the rod e from the posi tion shown to the central position itraises the shade al, so that a clear or white light is shown, and onmoving the rod to the opposite side it allows the other shade a to falland show a colored light. The bar d is slotted at each side, as seen atd', to receive the rod c, and it is also shaped, as shown, in thecenter, so as not to intercept the light between the iiame and thebulls-eye m. Instead of the bar L being tted within the body of thelamp, it may be fitted to the lower part of the 1ampcover to which thesleeve 7L would then be attached.

In some cases we adapt a link-motion to the colored shades a-s anequivalent device, the links being raised or lowered by a bent rod orwire similar to that already described.

Figs. 3 and 4 represent a lamp with a linkmotion adapted to the coloredshades, as just stated.

The shade-frames b b have arms c1 c1, which are free to turn on pins c2c2, attached to a plate, d. t' t' are links connecting the arms cl c1 tothe ends of levers 7c 7c, the opposite ends of which are centered on theplate d at l l. The lower end ot' the bent rod e,

which is similar to that shown in Figs. 1 and 2, passes under the leversk k. When the rod e is in its central position both the shades al a3 areheld up, but on moving the rod to either side the link on the oppositeside is alloWed to descend, and the corresponding shade falls.

What I claim, and desire to secure by Letters Patent, is-

In a hand signal-lamp, the vibratory bent lever e, in combination withthe slotted arms c c, or their equivalents, on the shade-frames b b,arranged to operatelthe colored shades a al in such a manner that bothare removed from before the light when said bent lever is placed in itscentral or normal position, and

SAM. W. CLARK. WILLM. ROBT. SYKES.

Witnesses:

J. C. MEWBURN,

169 Fleet Street, London. UIIAs. PUJINs,

Upper Thames Street, London.

